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boblgamble 06-20-2008 10:00 PM

Toilet Seal Leak Problem
I have a toilet that, after a number of years, has suddenly begun leaking at the wax seal. I replaced the seal three times without success. I believe there may be a problem with the vent causing this. My next task will be to put a hose in the vent pipe to see if I can flush it out. Can anyone provide guidance on this?

USP45 06-20-2008 10:23 PM

never had a vent do that to me.

Install a deep seal jumbo ring and place a regular ring on top of that. Sit the bowl over the 2 rings WITHOUT PRESSING it down to the floor. Look under the toilet. The toilet should be held up off the floor a little bit by the wax rings. twist the bowl slightly left to right while pressing down. This should seal it. If the bowl is not held off the floor by the rings then you may need to install some ring extenders. These are 1/4" thick rings that sit over the flange to build it up.

Also you may want to check before you install the rings is to set the toilet down on the flange and see if the toilet sets evenly across the entire area. Sometimes due to settling of the house the pipes sag. This can be fixed with plastic shims from a plumbing store.

mstplumber 06-20-2008 10:27 PM

Are you talking about a water leak or a sewer gas smell? If it is a water leak, check the toilet carefully to see if it has somehow developed a crack. If a sewer gas smell it could be due to a vent problem, but it's more likely that the flange or riser has developed a crack or hole.

majakdragon 06-21-2008 10:07 AM

I would be looking at the toilet for a crack. Maybe the flange also. Doubling up on wax seals is not always a good idea. Too easy to have one slide while installing and block the discharge. If the flange is below floor level by much, purchase a Flange Extender in the thickness needed. be sure to screw it down to the floor before installing the toilet.

mstplumber 06-21-2008 10:42 AM

If you do need to use flange extenders (essentially just the ring part of a flange), it is a very good idea to put a bead of Silicone caulk between the flange and the extender/spacer. Otherwise you haven't really solved the problem.

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